At Wikibooks, each book is effectively incubated as a minor project with its own scope, audience, writing style, standards, community of contributors, and space to grow. Wikibooks includes some rules that apply to all books, but in general contributors are left to make decisions about books on their own.

Minor projects may also cover one or a few related topical areas, are book-like or are useful to coordinate efforts between related books, and should fit within Wikibooks' typical standards. Minor projects are sometimes given leeway to see how they might develop.

Minor projects useful for coordinating efforts between related books can be hosted in the Wikibooks namespace as a WikiProject or use a subject page's discussion page. Creating other minor projects is as simple as starting a new book in the main namespace, picking a name for it, and following Wikibooks' naming policy for any pages belonging to it.

The major projects process is the discussion of a nomination to select a possible new major project for Wikibooks, the outcome of which will be determined by consensus. To be considered eligible for promotion, a minor project in this area must already form a vital community, having at least 5 active contributors and 100 well-developed pages. To become a new major project, no less than 30 people and 70% of the people that participate in the discussion must support the decision.